Brush



April 2 8, 1942. H. CAVE ET AL BRUSH Filed June 28, 1959 Patented Apr. 28, 1942 OFFICE BRUSH Henry Cave and Ali'red L. Le Febvre, Hartford,

Conn., assignors to The Fuller Brush Company, Hartford, Conn.

nectlcut a corporation of Con- Application June 28, 1939, Serial No. 281,672

10 Claims.

This invention relates more particularly to that type of brushes which comprises a core or arbor for supporting the bristles and which arbor may be used as a means for mechanically rotating the brush for cleaning operations, and an object of the invention, among others, is the production of a brush of this type of simple construction and capable of severe use and having means whereby the brush material may be secured to the arbor in a most efiicient manner; a further object of the invention is the provision of means for arranging the brush structure on the arbor in such a manner that the brush as a whole will be in balance, that is, that the weight on all sides 01' the arbor shall be substantially the same; and a still further object of the invention is the provision of means for securing the brush strip to the arbor which means may also serve for securing two brush strips together to lengthen the piece.

Arrangements embodying the invention and in the construction and use of which the objects herein set out, as well as others,,may be attained, are illustrated in the accompanying drawing, in which Figure l is a side view of a brush embodying the invention partially broken away to show construction.

Figure 2 is a view in lengthwise central section through one end of the brush cut in a plane at right angles to the plane of the section shown in Fig. 1.

Figure 3 is an end view of the brush.

Figure 4 is a face view of the connector plate.

Figure 5 is an edge view of the same.

Figure 6 is an isometric perspective view of a fragment of a brush strip illustrating the manner of attaching the connector thereto.

Figure 7 is a view on reduced scale showing the connector employed for securing two ends of a brush strip to lengthen the piece, or to secure the meeting ends of a brush ring.

Figure 8 is a view of one end of a brush illustrating a modified form with parts broken away to show construction.

This invention is particularly adapted for use in the construction of brushes which embody a base in any suitable manner, this structure being termed abrush strip herein. The present invention relates particularly to means for securing the ends of a brush strip to an arbor and also for joining One length of a brush strip to another in order to lengthen said strip and as hereinbefore mentioned.

In the accompanying drawing the numeral l0 denotes an arbor comprising the core or a. brush structure. This arbor is preferably of cylindrical form, and a brush strip is secured to the arbor by winding the strip spirally therearound in a mechanically rotated arbor and which brushes are put to severe use in various cleaning operations. These brushes usually comprise bristles of a stiff fibrous character interspersed with wire formed from metal. In the structure herein shown these bristles are secured in a base of trough-like form from which said bristles protrude and which are firmly secured within the manner well known to those skilled in the art of wire working. This strip consists of a base ll of trough shape with bristles l2 projecting therefrom, said bristles being secured in the base in any suitable manner and including a clamping action by the edgesv or jaws of the mouth of the trough against opposite sides of the bristle mass, the latter being composed'of any desired stifl material interspersed with metallic wire as hereinbefore mentioned. This brush strip is wound upon the arbor after securing one end thereto and while the arbor is commonly mechanically-rotated. During this winding operation the strip is tightly held under considerable tension opposed to the rotation of the arbor, thereby causing the brush strip to be tightly coiled around the arbor. Each end of the coil is secured to the arbor. The ends of the coil are secured to the arbor as by means of a holder IS in the form of a collar which is rotatably fitted to the arbor l0, a groove l6 extending across the inner surface of the holder for the reception of an angularly projecting piece from the end of the base II.

In a preferred form of construction this projecting piece comprises the end of a connector I! that, in fact, operates as an anchor. This connector is made by dividing the piece shown in Fig. 4 on the dotted line, this piece being made to vform two connectors. Said piece is formed from a fiat piece of metal having teeth It on its opposite edges which are bent over to enclose and tightly grip the metallic piece or base H of the brush strip and thereby firmly secure the connector to said base. The angularly projecting piece hereinbefore referred to constitutes a retainer l9 one of which retainers projects from each end of the structure shown in Fig. 4 to provide a retainer for each of the connectors formed from said piece. Such retainer islocated in the groove l6 extending across the inside of the holder and preferably extending through said groove, the projecting end thereof being bent for location in a notch 20 in the side of the holder l5,

as shown in Figs. 2 and 3 of the drawing. The holder is provided with threaded holes for the reception of set screws 2|, and a hole 22 is also made in the holder for application of a spanner wrench to said holder if required.

In the manufacture of brushesv of this type, as hereinbefore mentioned, it is very desirable that the brush structure shall be balanced upon the arbor and the structure herein illustrated and described is particularly well adapted for such purpose, as it enables the brush strip to be secured upon the arbor with a number of complete turns or coils only. In this operation a mark parallel with the axis of the arbor isextended along its outer surface and one end of the brush strip is secured in place in registry with such mark. The strip is then coiled or wound upon the arbor as hereinbefore described and when such winding is nearly completed it is stopped somewhat short of a full turn but near to said line. A connector having been fastened to the brush strip by 'bending the teeth to tightly enclose and grip the strip and said strip being tightly held to prevent any loosening thereof upon the arbor. The strip is now cut off at such point that it will just reach the line on the arbor hereinbefore mentioned and the holder having been slipped upon the arbor and engaged with the connector by location of the retainer I! there- On in the groove It, said holder is secured by tightening the set screw M with this end of the brush strip flush with the line on the arbor. The desired number of complete coils is thus arranged upon the arbor with the result that a well balanced brush is obtained.

In that form of the brush shown in Fig. 8 a groove 23 is extended diagonally across the inside of the holder l and quite closely in line with the direction of the coils on the arbor, this groove being of substantially the shape of the base of the brush strip. Such strip is coiled on'the arbor in the manner hereinbefore described and when the winding is nearly completed, the bristles having been removed from the extreme end of the strip said end is inserted through the groove in the holder. Said groove having been placed in registry with the line on the arbor hereinbefore mentioned, the projecting end of the strip is grasped by the instrument employed in the winding operation and is drawn through the holder until it is taut. Said end is then fastened as by means of a set screw extending through the holder into the groove and any part projecting out of the groove is cut off.

This improved connector is illustrated in Fig. '1 to connect the adjacent ends of a brush ring and this also illustrates the manner in which the connector may be used to secure two pieces together for the purpose of lengthening astrlp. When thus used as a means for attaching two pieces together the projecting pieces or retainers I9 are removed as by cutting on the dotted lines 2| as shown in Fig. 4 of the drawing.

In accordance with the provisions of the patent statutes we have described the principles of operation of our invention, together with the device which we now consider to represent the best embodiment thereof; but we desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out within the scope of the claims.

We claim:

1. A brush including an arbor, a brush strip comprising it separately formed grooved base 'with bristles projecting therefrom spirally wound the inner end thereof, a laterally projecting end from said base extending into said groove, and means for securing said holder against rotation in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain a set of complete coils thereby to effect a balance of the entire brush structure on all sides ofits axis.

2. A brush including an arbor, a brush strip comprising a separately formed trough-shaped base with bristles projecting therefrom spirally wound on said arbor. means for securing said strip at one end to said arbor, a holder ring rotatably mounted upon said arbor at the other end of said brush strip and having a groove extending across the inner edge thereof, a laterally projecting end from said base extending into said groove, and means for securing said holder against rotation in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain aset of complete coils thereby to effect a balance of the entire brush structure on all sides of its axis.

3. A brush including an arbor, a brush strip comprising a separately formed grooved base with bristles projecting therefrom spirally wound on said arbor, means for securing said strip at one end to said arbor, a holder ring rotatably mounted upon said arbor at the other end of said brush strip and having a groove extending across the inner edge thereof, a laterally projecting end from said base extending into said groove, means on said holder to receive a tool to turn said holder to tighten said brush strip on said arbor, and means for securing said holder against rotation in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain a set of complete coils thereby to effect a balance of the entire brush structure on all sides of its axis.

4. A brush including an arbor, a brush strip comprising a separately formed grooved base with bristles projecting therefrom spirally wound on said arbor, means for securing said strip at one end to said arbor, a holder ring rotatably mounted upon said arbor at the other end of said brush strip and having a groove extending its inner surface and a notch on the side thereof, a projecting end from said base extending into said groove with its extremity bent into said notch, and means for securing said holder against rotation in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain a set of complete coils thereby to effect a balance of the entire brush structure on all sides of its axis.

I 5. A brush including an arbor, a brush strip comprising a separately formed grooved base with bristles projecting therefrom spirally wound on said arbor, a connector having teeth project ing from its opposite edges bent around the base to secure the connector thereto and also having a laterally extending retainer, a holder ring rotatably mounted upon said arbor and having a groove on its inner surface to receive said connector, and means for securing said holder to said arbor in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain a set of complete coils thereby to effect a balance of the entire brush structure on all sides of its axis.

6. A brush including an arbor, a brush strip comprising a separately formed grooved base with bristles projecting therefrom spirally wound on said arbor, a connector having teeth projecting from its opposite edges bent around the base to secure the connector thereto, a projection comprising a retainer extending angularly from the end of said connector, a holder ring rotatably mounted upon said arbor and having a groove in its inner surface to receive said retainer, and means for securing said holder to the arbor in any position to which it may be turned to place opposite ends of the coils in line leng hwise of the arbor to obtain a set of complete coils thereby to effect a balance of the entire brush structure on all sides of its axis. l

7. A brush including an arbor, a brush strip comprising a separately formed grooved base with bristles projecting therefrom spirally wound on said arbor, a holder ring rotatably mounted upon said arbor at each end of said brush strip and having a groove extending across its inner edge, a laterally projecting end from said base extending into said groove, and means for secur-j ing each of said holders against rotation on said arbor in any position to which it may be turned to place opposite ends of the coils in line length wise of the arbor to obtain a set of complete coils therebs to effect a balance of the entirebrusli structure on all sides of its axis.

8. A brush including an arbor, a brush strip comprising a separately formed grooved base with bristles projecting therefrom spirally wound on said arbor, a holder ring rotatably mounted upon said arbor at each end of said base strip and having a groove extending across its inner edge, a projecting end from said base extending into said groove, said'brush strip comprising a complete number of turns around said arbor to balance said strip on said arbor, means for turning said holders in opposite directions on said arbor to line the ends of said strip, and means for securing said holders to the arbor.

9. A brush including an arbor, a brush strip including a separately formed trough shaped base with bristles projecting therefrom spirally wound on said arbor, means for securing said strip at one end to said arbor, a'holder ring rotatably mounted upon said arbor at the other end of said brush strip and having a groove extending diagonally therein across its inner edge in a direction corresponding to the spiral direction of said brush strip on said arbor, one end of said strip extending into said groove, and means for securing said holder to the arbor in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain a set 01' complete coils thereby to effect a balance of the entire brush structure on all sides of its axis.

10. A brush including an arbor, a brush strip comprising a plurality of bases with bristles projecting therefrom said bases abutting each other end to end and spirally wound on said arbor, a connector having teeth projecting from its opposite edges bent around the adjoining end portions of said base strips to secure them together, a second connector having teeth projecting from its opposite edges bent around one of said strips near its end, a projection comprising a retainer extending angularly from the end of said last mentioned connector, a holder ring rotatably mounted upon said arbor and having a groove in its inner surface to receive said retainer, and means for securing said holder to the arbor in any position to which it may be turned to place opposite ends of the coils in line lengthwise of the arbor to obtain a set or complete coils thereby to effect a.

balance of the entire brush structure on all sides of its axis.

HENRY CAVE. ALFRED L, LE FEBVRE. 

